
//import {hello,add} from './module.js';
// let {hello,add} =require('./module.js');
// hello();
// add();
//import {area,circumference} from "./circle.js"
//ES6 不支持
let  {area,circumference} require "./circle.js"
 console.log('圆面积:'+area(4));
 console.log('圆周长:'+circumference(4))